Harrison's H4 T-Shirt Harrison's H4 T-Shirt
Harrison's H4 T-Shirt Harrison's H4 T-Shirt

Harrison's H4 T-Shirt

Regular price £20.00 £15.00 Sale

Our unisex John Harrison T-shirt Features an abstract design based on Harrison’s famous H4 marine timekeeper that has been printed on to an olive green crew neck T-shirt; making it the perfect souvenir for a horologist.

The H4 marine timekeeper is John Harrison's prize-winning longitude watch, which he completed in 1759. Harrison had been working on improving watches as a side-line to his development of the much larger H3. In 1753 a pocket watch was made to Harrison's design by watchmaker John Jefferys. This went so well that Harrison began to realise that it pointed to the longitude solution - not in H3 but in smaller watches. Work began on H4 in 1755 and, with its very stable, high frequency balance; it proved to be the successful design, eventually winning the Longitude Prize for him by an Act of Parliament in 1773.

This T-shirt is exclusive to Royal Museums Greenwich and is part of our Longitude & John Harrison collection.








Chest size (Inches)

35" - 37"

38" - 40"

41" - 43"

44" - 46"

Chest size (CM's)

89 - 94    cm

96 - 101 cm

104 - 109 cm

112 - 117 cm

Waist (Inches)





Waist (CM's)

81 cm

86 cm

91.5 cm

96.5 cm

Length (Inches)





Length (CM's)

71 cm

72 cm

74 cm

79 cm

Material: 100% Cotton

Washable: Machine Washable at 40º

Tumble Dry at a low temperature

Iron at a medium temperature

Printed in the UK

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    Please see our FAQs for more information.

    Custom Prints (those which are customised by choosing a size and frame) take a little longer due to being made to order. Please see our Delivery & Returns page  for more information.

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